SCCA® Solo classing — unofficial guide
What autocross class is a BMW Z4 35i & 35is (E89)?
CSStreet
A stock 2009–2016 BMW Z4 35i & 35is (E89) runs in CS (Street) under the 2026 SCCA Solo Rules.
From the 2026 rulebook (Appendix A)
Street: 'Z4 35i & 35is (2009-16)' = CS. No ST listing found.
Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on.